与子查询DELETE和LIKE

Question

如何与查询删除这样

DELETE FROM tbl 
WHERE title LIKE CONCAT((select title from tbl where id = 10),'%') 

该查询返回错误

[错误] 1093行 - 你不能指定目标表 '项' 的更新在 FROM子句

Answer 1

DELETE t 
FROM 
    tableX AS t 
    JOIN 
    (SELECT CONCAT(title, '%') AS titleL 
     FROM tableX 
     WHERE id = 10 
    ) AS ti 
    ON t.title LIKE ti.titleL 

Answer 2

我觉得你刚刚从线，以执行一个选择查询插入另一：

DELETE t1 
FROM tbl as t1 
WHERE t1.title LIKE CONCAT((select title from tbl as t2 where t2.id = 10),'%') 

Answer 3

你需要的东西，如：

DELETE tbl 
    FROM tbl T1 
     INNER JOIN (SELECT title FROM tbl WHERE id = 10) T2     
    ON T1.title LIKE CONCAT(T2.title, '%') 

Answer 4

一个办法来解决这个错误是其拆分成2个独立的语句。

您可以选择要匹配的标题放入用户定义的变量中，然后执行删除操作。

像这样：

SELECT title 
INTO @title 
FROM tbl 
WHERE id = 10; 

DELETE FROM tbl 
WHERE title LIKE CONCAT(@title,'%');